How Much Does It Really Cost to Start a Small Business?

"How much does it cost to start a business" gets answered with one big scary number more often than it should, and that number is usually an average across business types that have almost nothing in common with each other. A storefront and a solo consulting side business are not the same math problem.

Why "Average Cost" Isn't a Useful Number for You

A 2026 survey of small business owners by Business.org found an average first-year spend of about $40,000 across all business types — but broken down by model, online-only businesses averaged $35,000, mobile businesses $92,500, and storefront businesses $100,000. A single blended average obscures a huge range: most small businesses in the U.S. spend somewhere between $3,000 and $200,000-plus to get started, depending heavily on whether the business needs a physical location, inventory, or employees on day one.

A Real Lean Startup Budget: Line by Line

For a solo, service-based side business with no physical storefront and no employees, one-time setup costs realistically look like: LLC formation filing fee $150, business license $75, a basic logo and one-page website $600, a laptop or equipment upgrade $900, and initial supplies $500 — a $2,225 one-time total. Add ongoing monthly costs of software subscriptions $45, business insurance $40, website hosting $15, and a modest marketing budget $150, for $250 a month. A 3-month operating buffer at that rate is $750. Total realistic starting cost: $2,225 + $750 = $2,975.

Step-by-Step: Building Your Own Startup Budget

The SBA's guidance on estimating starting costs breaks the total into three parts: expenses incurred before the business opens (legal fees, early marketing, signage), assets the business needs on day one that aren't cash (equipment, inventory, a vehicle), and cash reserved to cover operating deficits while the business is still building revenue. List all three separately using real quotes and prices, not rough guesses, then add them together for the total starting cost figure.

Where the Money Actually Goes First

Legal formation and licensing should come before any spending on marketing or equipment, since operating without the right business structure or license can create bigger costs later. After that, the operating buffer matters more than any single piece of equipment — a business with $2,225 in setup but zero operating cushion is more fragile than one with a smaller setup budget and a real 3-month buffer, since the buffer is what survives an inevitable slow first month or two.

If the $2,975 Still Isn't Sitting in Savings

Not everyone starting a lean side business has $2,975 in savings to deploy at once, and that's a financing question, not a reason to abandon the budget. The SBA's Microloan Program provides loans up to $50,000 to help small businesses start or expand, with an average loan size of about $13,000 — well above what a $2,975 lean budget needs, meaning a much smaller loan request within that program is realistic for exactly this kind of startup cost.

Whatever the funding source — personal savings, a microloan, or a 0% introductory-rate business card used deliberately and paid off before the rate resets — the same $2,225-plus-$750 line-item budget from the section above is what determines how much actually needs to be borrowed, rather than borrowing a round number that either falls short mid-launch or sits partly unused as expensive idle debt.

The Short Version

Generic "average cost to start a business" figures near $40,000 mostly reflect storefront and mobile businesses, not lean service-based ones. A line-item budget for a solo service business — $2,225 in one-time setup plus a $750 three-month buffer, for $2,975 total — is a far more realistic starting number for that kind of business, and worth building as your own itemized list rather than borrowing a national average that doesn't match your model. If that amount isn't available in savings, size any financing to the actual line-item total, not to a round guess.

FAQ

Educational resource only, not legal or financial advice. Costs above are an illustrative example for one type of business; your own filing fees, licensing requirements, and costs will vary by state and industry. See the U.S. Small Business Administration's guide to estimating starting costs for official guidance.